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    react-native-local-authentication

    0.1.1 • Public • Published

    react-native-local-authentication

    Local authentication for react native, supports iOS only. See iOS Local Authentication Document

    Install

    npm i --save react-native-local-authentication
    react-native link react-native-local-authentication

    Usage

    setLocalizedFallbackTitle(title)

    Set fallback button title.

    setLocalizedCancelTitle(title)

    Set cancel button title.

    canEvaluate(policy)

    Determines if a particular policy can be evaluated.

    Parameters

    • policy

    The policy to evaluate.

    see LAPolicy

    Response

    Successful

    see LABiometryType

    • none: No biometry type is supported.
    • touchID: The device supports Touch ID.
    • faceID: The device supports Face ID.

    Failed

    • code: see LAError
    • message: error message

    evaluate(policy, localizedReason)

    parameters

    • policy

    Policy for which the preflight check should be run.

    • localizedReason

    Policy for which the preflight check should be run.

    Response

    Successful

    return true

    Failed

    • code: see LAError
    • message: error message

    invalidate()

    Invalidates the context.

    LAError

    error code

    Example

    import RNLocalAuthentication, { LAError, LABiometryType } from 'react-native-local-authentication';
     
    async _evaluate() {
      try {
        const biometryType = await RNLocalAuthentication.canEvaluate();
        if (biometryType && (biometryType === LABiometryType.touchID || LABiometryType.faceID)) {
          const result = await RNLocalAuthentication.evaluate(1, biometryType === LABiometryType.touchID ? 'Evaluate Touch ID' : 'Evaluate Face ID');
          console.log('evaluate', result ? 'evaluate successful' : 'evaluate failed');
          Alert.alert('evaluate', result ? 'successful' : 'failed');
        } else {
          Alert.alert('Can not evaluate', biometryType);
        }
      } catch (e) {
        console.log('evaluate', e.code, e.message, e);
        if (parseInt(e.code) === LAError.LAErrorTouchIDNotAvailable) {
          Alert.alert('Error', 'device does not support touch ID or face ID');
        } else {
          Alert.alert('Error', e.message);
        }
      }
    };

    Install

    npm i react-native-local-authentication

    DownloadsWeekly Downloads

    2

    Version

    0.1.1

    License

    MIT

    Last publish

    Collaborators

    • bellzhong